Defending champion Novak Djokovic and triple women's winner Serena Williams stormed into the US Open second round on a breezy and humid Tuesday night at Flushing Meadows.
While world No. 2 Djokovic needed just 73 minutes to finish off an embarrassingly one-sided 6-1, 6-0, 6-1 mauling of hapless Italian Paolo Lorenzi, Williams, the champion in 1999, 2002 and 2008, swept past compatriot Coco Vandeweghe 6-1, 6-1.
However, former world No. 1 and 2009 runner-up Caroline Wozniacki, without a title this year, crashed to a painful first-round loss. The Danish eighth seed, watched by golfing superstar boyfriend Rory McIlroy, was beaten by World No. 96 Irina-Camelia Begu 6-2, 6-2.
Wozniacki came into the match with her knee heavily strapped, having picked up an injury at New Haven last week, and she needed more treatment on Tuesday before slipping to defeat. "I tried and didn't succeed in playing well. There were too many errors. It's frustrating but I will have to move on," said Wozniacki, who made the semi-finals in the last two years.
David Nalbandian was ruled out of the US Open on Tuesday after suffering a rib injury, the organisers confirmed. His place is expected to be taken by French lucky loser Florent Serra.